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title: Featherless AI
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[Featherless AI](https://featherless.ai/) is a serverless AI inference platform that offers access to over 4300+ open-source models. Our goal is to make all AI models available for serverless inference. We provide inference via API to a continually expanding library of open-weight models.

# Installation and Setup
`pip install langchain-featherless-ai`
1. Sign up for an account at [Featherless](https://featherless.ai/register)
2. Subscribe to a plan and get your API key from [API Keys](https://featherless.ai/account/api-keys)
3. Set up your API key as an environment variable(`FEATHERLESSAI_API_KEY`)

# Model catalog
Visit our model catalog for an overview of all our models: https://featherless.ai/models
